MFC r270710 and r270821:

- Update the OFED Linux Emulation layer as a preparation for a
hardware driver update from Mellanox Technologies.
- Remove empty files from the OFED Linux Emulation layer.
- Fix compile warnings related to printf() and the "%lld" and "%llx"
format specifiers.
- Add some missing 2-clause BSD copyrights.
- Add "Mellanox Technologies, Ltd." to list of copyright holders.
- Add some new compatibility files.
- Fix order of uninit in the mlx4ib module to avoid crash at unload
using the new module_exit_order() function.

Sponsored by:	Mellanox Technologies

1 files changed, 133 insertions, 0 deletions

diff --git a/sys/ofed/include/linux/math64.h b/sys/ofed/include/linux/math64.h
new file mode 100644
index 0000000..cc3d946
--- /dev/null
+++ b/sys/ofed/include/linux/math64.h
@@ -0,0 +1,133 @@
+/*-
+ * Copyright (c) 2007 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2014 Mellanox Technologies, Ltd. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LINUX_MATH64_H
+#define _LINUX_MATH64_H
+
+#include <linux/types.h>
+#include <linux/bitops.h>
+
+#if BITS_PER_LONG == 64
+ 
+# define do_div(n, base) ({                                    \
+	uint32_t __base = (base);                               \
+	uint32_t __rem;                                         \
+	__rem = ((uint64_t)(n)) % __base;                       \
+	(n) = ((uint64_t)(n)) / __base;                         \
+	__rem;                                                  \
+})
+
+/**
+* div_u64_rem - unsigned 64bit divide with 32bit divisor with remainder
+*
+* This is commonly provided by 32bit archs to provide an optimized 64bit
+* divide.
+*/
+static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
+{
+        *remainder = dividend % divisor;
+        return dividend / divisor;
+}
+
+
+#elif BITS_PER_LONG == 32
+
+static uint32_t __div64_32(uint64_t *n, uint32_t base)
+{
+	uint64_t rem = *n;
+	uint64_t b = base;
+	uint64_t res, d = 1;
+	uint32_t high = rem >> 32;
+
+	/* Reduce the thing a bit first */
+	res = 0;
+	if (high >= base) {
+		high /= base;
+		res = (uint64_t) high << 32;
+		rem -= (uint64_t) (high*base) << 32;
+	}
+
+	while ((int64_t)b > 0 && b < rem) {
+		b = b+b;
+		d = d+d;
+	}
+
+	do {
+		if (rem >= b) {
+			rem -= b;
+			res += d;
+		}
+		b >>= 1;
+		d >>= 1;
+	} while (d);
+
+	*n = res;
+	return rem;
+}
+ 
+# define do_div(n, base) ({                            \
+	uint32_t __base = (base);                       \
+	uint32_t __rem;                                 \
+	(void)(((typeof((n)) *)0) == ((uint64_t *)0));  \
+	if (likely(((n) >> 32) == 0)) {                 \
+		__rem = (uint32_t)(n) % __base;         \
+		(n) = (uint32_t)(n) / __base;           \
+	} else                                          \
+		__rem = __div64_32(&(n), __base);       \
+	__rem;                                          \
+})
+
+#ifndef div_u64_rem
+static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
+{
+        *remainder = do_div(dividend, divisor);
+        return dividend;
+}
+#endif
+ 
+
+#endif /* BITS_PER_LONG */
+
+
+
+/**
+ ** div_u64 - unsigned 64bit divide with 32bit divisor
+ **
+ ** This is the most common 64bit divide and should be used if possible,
+ ** as many 32bit archs can optimize this variant better than a full 64bit
+ ** divide.
+ *  */
+#ifndef div_u64
+
+static inline u64 div_u64(u64 dividend, u32 divisor)
+{
+        u32 remainder;
+        return div_u64_rem(dividend, divisor, &remainder);
+}
+#endif
+
+#endif	/* _LINUX_MATH64_H */